Opening mechanism for vehicle body conveying system

Abstract

The utility model relates to an opening mechanism for a vehicle body conveying system, which is used for opening a conveying lifting appliance and comprises a frame unit, an air cylinder and a connecting rod unit, the top end of the air cylinder is fixed to the top end in the frame unit, the bottom end of the air cylinder is connected with the connecting rod unit, one end of the connecting rod unit is rotationally connected with the bottom end of the frame unit, the other end of the connecting rod unit is connected with the conveying sling, and the air cylinder is used for controlling the connecting rod unit to open the conveying sling. When a piston rod of the air cylinder stretches out, the connecting rod unit is driven to move downwards, and the connecting rod unit lifts upwards to open the conveying lifting appliance. When the piston rod of the air cylinder retracts, the connecting rod unit is driven to move upwards, and the connecting rod unit presses downwards to close the conveying lifting appliance. Compared with the prior art, the air cylinder and the connecting rod unit are adopted for jacking, the output force of the opening mechanism is improved, and after opening is completed, a mechanical dead point guarantees that the situation that the opening mechanism retracts due to insufficient air source supply of the mechanism is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of slings, in particular to an opening mechanism for a vehicle body conveying system. Background Art

[0002] In automobile manufacturing plants, hoists are a very common type of tooling equipment. The shape and structure of the hoist depends on the structure of the product. Different product structures will result in different shapes and structures of the hoist. These hoists have one thing in common - they are not very flexible.

[0003] In the assembly workshop of the main automobile plant, the car body is transported by EMS to realize the assembly of the bottom parts of the car body. After the installation is completed, a mechanism is required to open the transport hoist to complete the car body off the line. At present, the EMS transportation of automobile bodies mostly adopts cylinder direct push hoist arm. The opening and tightening of the hoist is controlled by the cylinder, which can realize the automation of the hoist movement. That is, the existing technology generally uses power supply and compressed air as power, uses electric hoists to realize the lifting and walking of the hoist, and uses cylinders to realize the opening and tightening of the legs. However, since the cylinder must be pushed by compressed air, there is no ready-made air source in areas such as the paint shop where compressed air is less used. When the hoist needs to walk, the length of the cylinder must be greater than the walking distance. The longer the walking distance, the more difficult it is to deal with the problem of releasing and retracting the cylinder; and the direct push of the cylinder has the problem of unstable air supply, which may cause the open hoist arm to suddenly retract due to the inability to keep up with the source supply, resulting in production accidents.

[0004] Therefore, it is necessary to provide an opening mechanism for preventing the spreader arm from retracting. Utility Model Content

[0005] The purpose of the utility model is to provide an opening mechanism for a vehicle body conveying system, wherein the opening mechanism is used to open a conveying hanger in the vehicle body conveying system to facilitate the vehicle body to be unloaded. The invention uses a cylinder and a set of multi-link mechanisms to achieve the function of opening the hanger.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] An opening mechanism for a vehicle body conveying system, the vehicle body conveying system comprising an opening mechanism and a conveying hanger, two opening mechanisms are symmetrically arranged above the conveying hanger, the opening mechanism is used to open the conveying hanger, the opening mechanism comprises a frame unit, a cylinder and a connecting rod unit;

[0008] The top of the cylinder is fixed to the top of the frame unit, the bottom of the cylinder is connected to the connecting rod unit, one end of the connecting rod unit is rotatably connected to the bottom of the frame unit, and the other end of the connecting rod unit is connected to the conveying hanger.

[0009] The cylinder is used to control the connecting rod unit to open the conveying hanger;

[0010] When the piston rod of the cylinder extends, it drives the connecting rod unit to move downward, and the connecting rod unit lifts upward to open the conveying hanger; when the piston rod of the cylinder retracts, it drives the connecting rod unit to move upward, and the connecting rod unit presses downward to close the conveying hanger.

[0011] In one embodiment of the utility model, the connecting rod unit includes a first connecting rod, a second connecting rod and a third connecting rod connected in sequence, the first connecting rod is connected to the bottom end of the frame unit, and the third connecting rod is connected to the conveying hanger;

[0012] The cylinder is connected to the connection between the first connecting rod and the second connecting rod at the same time;

[0013] When the piston rod of the cylinder extends, it drives the first connecting rod and the second connecting rod to move downward, and the downward movement of the first connecting rod and the second connecting rod drives the third connecting rod to move upward, thereby opening the conveying hanger;

[0014] When the piston rod of the cylinder retracts, the first connecting rod and the second connecting rod are driven to move upward, and the first connecting rod and the second connecting rod move upward to drive the third connecting rod to press downward, thereby closing the conveying hanger.

[0015] In one embodiment of the utility model, a second fixed seat is provided at the bottom end of the frame unit, one end of the first connecting rod is rotatably connected to the second fixed seat via a first rotating shaft, and the other end of the first connecting rod is rotatably connected to the second connecting rod via a second rotating shaft, and the second rotating shaft is also connected to the cylinder.

[0016] In one embodiment of the utility model, a positioning adjustment rod is also provided at the bottom end of the frame unit, and the positioning adjustment rod is arranged below the second rotating shaft. When the piston rod of the cylinder extends and drives the first connecting rod and the second connecting rod to move downward, the second rotating shaft is connected to the positioning adjustment rod. The positioning adjustment rod is used to limit the position of the first connecting rod and the second connecting rod, ensuring that the first connecting rod and the second connecting rod produce a mechanical dead point, and ensuring that the opening mechanism is in a self-locking state when opened.

[0017] In one embodiment of the utility model, a mounting plate is further provided at the bottom end of the frame unit, and a travel switch is provided on the mounting plate. When the piston rod of the cylinder extends and drives the first connecting rod and the second connecting rod to move downward, the travel switch is connected to the first connecting rod. The travel switch is used to detect whether the downward movement of the first connecting rod and the second connecting rod is in place.

[0018] As a preferred technical solution, the mounting plate is welded to the bottom end of the frame unit.

[0019] In one embodiment of the utility model, one end of the third connecting rod is rotatably connected to the second connecting rod through a third rotating shaft, and the other end of the third connecting rod is connected to the conveying hanger through a lifting support block.

[0020] As a preferred technical solution, the jacking support block is made of quenched material. The jacking support block is often in contact with the conveying hanger. The surface hardness of the jacking support block is high and it is not easy to be damaged. If it is damaged, only a single component needs to be replaced.

[0021] In one embodiment of the present invention, the side wall of the frame unit is provided with a first fixing seat.

[0022] The third connecting rod includes an integrally formed short connecting rod and a long connecting rod, one end of the short connecting rod is rotatably connected to the second connecting rod through a third rotating shaft, the other end of the short connecting rod is fixed to the long connecting rod, one end of the long connecting rod is rotatably connected to the first fixed seat through a fourth rotating shaft, and the other end of the long connecting rod is connected to the conveying sling through a lifting support block.

[0023] In an embodiment of the present utility model, the side wall of the frame unit is further provided with a cylinder seat, and the tail end of the cylinder is hinged on the cylinder seat.

[0024] In one embodiment of the present utility model, the vehicle body conveying system further comprises a conveying slide, a conveying slide is arranged below the conveying hanger, and the conveying hanger is used for conveying the vehicle body.

[0025] In one embodiment of the present utility model, the conveying hanger further includes a bracket unit, the bracket unit includes a plurality of columns, and the conveying hanger and the conveying slide are arranged between the columns.

[0026] In one embodiment of the utility model, a hoist is slidably provided on the column, and the hoist is used to transfer the assembled whole vehicle, so that the whole vehicle originally circulating on the second floor is lowered to the conveying slide.

[0027] Compared with the prior art, the utility model has the following beneficial effects:

[0028] 1. The opening mechanism of the present invention is provided with a cylinder and a set of multi-link units. The link unit plays the role of converting and amplifying the cylinder force, and limits the positions of the first link and the second link by the positioning adjustment rod. The mechanical dead point is designed to meet the self-locking of the mechanism after opening. The force transmission of the positioning adjustment rod makes it impossible for the opening mechanism to produce movement changes. The second rotating shaft between the first link and the second link can only move the opening mechanism.

[0029] 2. The opening mechanism of the present invention has a simple and reasonable structure and an ingenious design. It utilizes a multi-link unit to enhance the force and meets production safety through a mechanical dead point, thereby ensuring safe and reliable production.

[0030] 3. In view of the current status of the opening mechanism of the EMS delivery of automobile bodies, the opening mechanism described in the present invention innovatively adopts a cylinder plus a multi-link unit for lifting, thereby increasing the force output by the opening mechanism, and having a mechanical dead point after the final opening is completed to ensure that the mechanism will no longer be insufficiently supplied with air, thereby causing the opening mechanism to retract. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a front view of the opening mechanism of the utility model;

[0032] Figure 2 This is a schematic diagram of the structure of the cylinder push-out of the opening mechanism of the utility model;

[0033] Figure 3 It is a structural schematic diagram of the opening mechanism of the utility model;

[0034] Figure 4 It is a side view of the opening mechanism of the utility model;

[0035] Figure 5 This is a top view of the opening mechanism of the utility model;

[0036] Figure 6 It is a front view of the vehicle body conveying system of the present utility model.

[0037] Explanation of the accompanying drawing numbers: 1. opening mechanism, 2. conveying sling, 3. hoist, 4. conveying slide, 5. frame unit, 6. cylinder, 7. connecting rod unit, 8. travel switch, 9. positioning adjustment rod, 10. lifting support block, 11. first connecting rod, 12. second connecting rod, 13. third connecting rod, 14. cylinder seat, 15. first fixed seat, 16. second fixed seat. DETAILED DESCRIPTION

[0038] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0040] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0043] Example 1

[0044] See also Figures 1 to 6 This embodiment provides an opening mechanism for a vehicle body conveying system, the vehicle body conveying system comprises an opening mechanism 1 and a conveying hanger 2, two opening mechanisms 1 are symmetrically arranged above the conveying hanger 2, the opening mechanism 1 is used to open the conveying hanger 2, and the opening mechanism 1 comprises a frame unit 5, a cylinder 6 and a connecting rod unit 7;

[0045] The top of the cylinder 6 is fixed to the top of the frame unit 5, and the bottom of the cylinder 6 is connected to the connecting rod unit 7. One end of the connecting rod unit 7 is rotatably connected to the bottom of the frame unit 5, and the other end of the connecting rod unit 7 is connected to the conveying hanger 2.

[0046] The cylinder 6 is used to control the connecting rod unit 7 to open the conveying hanger 2;

[0047] When the piston rod of the cylinder 6 extends, it drives the connecting rod unit 7 to move downward, and the connecting rod unit 7 lifts upward to open the conveying hanger 2; when the piston rod of the cylinder 6 retracts, it drives the connecting rod unit 7 to move upward, and the connecting rod unit 7 presses downward to close the conveying hanger 2.

[0048] In this embodiment, the connecting rod unit 7 includes a first connecting rod 11, a second connecting rod 12 and a third connecting rod 13 connected in sequence, the first connecting rod 11 is connected to the bottom end of the frame unit 5, and the third connecting rod 13 is connected to the conveying hanger 2;

[0049] The cylinder 6 is connected to the connection between the first connecting rod 11 and the second connecting rod 12;

[0050] When the piston rod of the cylinder 6 extends, it drives the first connecting rod 11 and the second connecting rod 12 to move downward, and the downward movement of the first connecting rod 11 and the second connecting rod 12 drives the third connecting rod 13 to move upward, thereby opening the conveying hanger 2;

[0051] When the piston rod of the cylinder 6 retracts, the first connecting rod 11 and the second connecting rod 12 move upward, and the first connecting rod 11 and the second connecting rod 12 move upward and drive the third connecting rod 13 to press downward, thereby closing the conveying hanger 2.

[0052] In this embodiment, a second fixed seat 16 is provided at the bottom end of the frame unit 5, one end of the first connecting rod 11 is rotatably connected to the second fixed seat 16 via a first rotating shaft, and the other end of the first connecting rod 11 is rotatably connected to the second connecting rod 12 via a second rotating shaft, and the second rotating shaft is also connected to the cylinder 6.

[0053] In this embodiment, a positioning adjustment rod 9 is also provided at the bottom end of the frame unit 5, and the positioning adjustment rod 9 is provided below the second rotating shaft. When the piston rod of the cylinder 6 extends and drives the first connecting rod 11 and the second connecting rod 12 to move downward, the second rotating shaft is connected to the positioning adjustment rod 9. The positioning adjustment rod 9 is used to limit the position of the first connecting rod 11 and the second connecting rod 12 in place, ensuring that the first connecting rod 11 and the second connecting rod 12 produce a mechanical dead point, thereby ensuring that the opening mechanism is in a self-locking state when opened.

[0054] In this embodiment, a mounting plate is further provided at the bottom end of the frame unit 5, and a travel switch 8 is provided on the mounting plate. When the piston rod of the cylinder 6 extends and drives the first connecting rod 11 and the second connecting rod 12 to move downward, the travel switch 8 is connected to the first connecting rod 11. The travel switch 8 is used to detect whether the first connecting rod 11 and the second connecting rod 12 have moved downward to the desired position.

[0055] In this embodiment, the mounting plate is welded to the bottom end of the frame unit 5 .

[0056] In this embodiment, one end of the third connecting rod 13 is rotatably connected to the second connecting rod 12 via a third rotating shaft, and the other end of the third connecting rod 13 is connected to the conveying hanger 2 via a lifting support block 10 .

[0057] In this embodiment, the lifting support block 10 is made of quenched material. The lifting support block 10 is often in contact with the conveying hanger 2. The surface hardness of the lifting support block 10 is high and it is not easy to be damaged. If it is damaged, only a single component needs to be replaced.

[0058] In this embodiment, the side wall of the frame unit 5 is provided with a first fixing seat 15.

[0059] The third connecting rod 13 includes an integrally formed short connecting rod and a long connecting rod, one end of the short connecting rod is rotatably connected to the second connecting rod 12 via a third rotating shaft, the other end of the short connecting rod is fixed to the long connecting rod, one end of the long connecting rod is rotatably connected to the first fixed seat 15 via a fourth rotating shaft, and the other end of the long connecting rod is connected to the conveying sling 2 via a lifting support block 10.

[0060] In this embodiment, a cylinder seat 14 is further provided on the side wall of the frame unit 5 , and the rear end of the cylinder 6 is hinged on the cylinder seat 14 .

[0061] In this embodiment, the vehicle body conveying system further includes a conveying slide 4 , and a conveying slide 4 is provided below the conveying hanger 2 , and the conveying hanger 2 is used to convey the vehicle body.

[0062] In this embodiment, the transporting hanger 2 further includes a bracket unit, and the bracket unit includes a plurality of columns. The transporting hanger 2 and the transporting slide 4 are arranged between the columns.

[0063] In this embodiment, a hoist 3 is slidably provided on the column, and the hoist 3 is used to transfer the assembled whole vehicle, from which the whole vehicle originally circulated on the second floor is lowered to the conveying slide 4.

[0064] This embodiment also provides a method for using an opening mechanism for a vehicle body conveying system, and the specific steps are as follows:

[0065] When the piston rod of the cylinder 6 is extended, the connecting rod unit 7 is driven to move downward, and the connecting rod unit 7 is lifted upward to open the conveying hanger 2; when the piston rod of the cylinder 6 is retracted, the connecting rod unit 7 is driven to move upward, and the connecting rod unit 7 is pressed downward to close the conveying hanger 2.

[0066] In addition, this embodiment provides a method for using the vehicle body conveying system, and the specific steps are as follows:

[0067] The conveying sling 2 is transported to the stop position of the elevator 3 through the line body. The elevator 3 moves upward to lift the whole vehicle in the conveying sling 2 for a certain distance. The opening mechanism 1 moves to open the arm of the conveying sling 2. The elevator 3 moves downward to drive the whole vehicle to descend and be transferred to the conveying slide 4. The opening mechanism 1 moves back to the original position, and the conveying sling 2 continues to flow through the line body.

[0068] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.

Claims

1. An opening mechanism for a vehicle body conveying system, the vehicle body conveying system comprising an opening mechanism (1) and a conveying hanger (2), two opening mechanisms (1) being symmetrically arranged above the conveying hanger (2), the opening mechanism (1) being used to open the conveying hanger (2), characterized in that: The opening mechanism (1) comprises a frame unit (5), a cylinder (6) and a connecting rod unit (7); The top end of the cylinder (6) is fixed to the top end inside the frame unit (5), the bottom end of the cylinder (6) is connected to the connecting rod unit (7), one end of the connecting rod unit (7) is rotatably connected to the bottom end of the frame unit (5), and the other end of the connecting rod unit (7) is connected to the conveying hanger (2). The cylinder (6) is used to control the connecting rod unit (7) to open the conveying hanger (2); When the piston rod of the air cylinder (6) is extended, the connecting rod unit (7) is driven to move downward, and the connecting rod unit (7) is lifted upward to open the conveying hanger (2); when the piston rod of the air cylinder (6) is retracted, the connecting rod unit (7) is driven to move upward, and the connecting rod unit (7) is pressed downward to close the conveying hanger (2).

2. The opening mechanism for a vehicle body conveying system according to claim 1, characterized in that: The connecting rod unit (7) comprises a first connecting rod (11), a second connecting rod (12) and a third connecting rod (13) which are connected in sequence, wherein the first connecting rod (11) is connected to the bottom end of the frame unit (5), and the third connecting rod (13) is connected to the conveying hanger (2); The cylinder (6) is connected to the connection point of the first connecting rod (11) and the second connecting rod (12); When the piston rod of the cylinder (6) extends, it drives the first connecting rod (11) and the second connecting rod (12) to move downward, and the downward movement of the first connecting rod (11) and the second connecting rod (12) drives the third connecting rod (13) to move upward, thereby opening the conveying sling (2); When the piston rod of the cylinder (6) retracts, it drives the first connecting rod (11) and the second connecting rod (12) to move upwards. The upward movement of the first connecting rod (11) and the second connecting rod (12) drives the third connecting rod (13) to press downwards, thereby closing the conveying hanger (2).

3. The opening mechanism for a vehicle body conveying system according to claim 2, characterized in that: A second fixed seat (16) is provided at the bottom end of the frame unit (5); one end of the first connecting rod (11) is rotationally connected to the second fixed seat (16) via a first rotating shaft; the other end of the first connecting rod (11) is rotationally connected to the second connecting rod (12) via a second rotating shaft; and the second rotating shaft is simultaneously connected to the cylinder (6).

4. The opening mechanism for a vehicle body conveying system according to claim 3, characterized in that: The bottom end of the frame unit (5) is also provided with a positioning adjustment rod (9), and the positioning adjustment rod (9) is arranged below the second rotating shaft. When the piston rod of the cylinder (6) extends to drive the first connecting rod (11) and the second connecting rod (12) to move downward, the second rotating shaft is connected to the positioning adjustment rod (9), and the positioning adjustment rod (9) is used to limit the positions of the first connecting rod (11) and the second connecting rod (12).

5. The opening mechanism for a vehicle body conveying system according to claim 2, characterized in that: A mounting plate is also provided at the bottom end of the frame unit (5), and a travel switch (8) is provided on the mounting plate. When the piston rod of the cylinder (6) extends and drives the first connecting rod (11) and the second connecting rod (12) to move downward, the travel switch (8) is connected to the first connecting rod (11). The travel switch (8) is used to detect whether the first connecting rod (11) and the second connecting rod (12) have moved downward to the desired position.

6. The opening mechanism for a vehicle body conveying system according to claim 2, characterized in that: One end of the third connecting rod (13) is rotationally connected to the second connecting rod (12) via a third rotating shaft, and the other end of the third connecting rod (13) is connected to the conveying hanger (2) via a lifting support block (10).

7. The opening mechanism for a vehicle body conveying system according to claim 6, characterized in that: The side wall of the frame unit (5) is provided with a first fixing seat (15). The third connecting rod (13) includes an integrally formed short connecting rod and a long connecting rod, one end of the short connecting rod is rotationally connected to the second connecting rod (12) via a third rotating shaft, the other end of the short connecting rod is fixed to the long connecting rod, one end of the long connecting rod is rotationally connected to the first fixed seat (15) via a fourth rotating shaft, and the other end of the long connecting rod is connected to the conveying sling (2) via a lifting support block (10).

8. The opening mechanism for a vehicle body conveying system according to claim 1, characterized in that: The side wall of the frame unit (5) is also provided with a cylinder seat (14), and the rear end of the cylinder (6) is hinged on the cylinder seat (14).

9. The opening mechanism for a vehicle body conveying system according to claim 1, characterized in that: The vehicle body conveying system further comprises a conveying slide (4), a conveying slide (4) being arranged below the conveying hanger (2), and the conveying hanger (2) being used for conveying the vehicle body.

10. The opening mechanism for a vehicle body conveying system according to claim 9, characterized in that: The transporting sling (2) further comprises a bracket unit, wherein the bracket unit comprises a plurality of columns, and the transporting sling (2) and the transporting skid (4) are arranged between the columns; A hoist (3) is slidably provided on the column, and the hoist (3) is used for transferring the assembled vehicle.

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